Graphophone manufacturing com



May 22, 1923. l l Re. 15,608

, C. F, BURROUGHS HEATING OR COOLING PLATEFOR HOLDING PRESSES May 22, 1923.

c. F.vBuRRoUGH's HEATING OR COOLING PLATE FOR HOLDING PRESSES 191e 3 sheets-sheet 2 orlglnal Fild Febr?,-

UNITED STATES lmTEIxVr OFFICE.

CHARLES F. BURROUGHS, 0F EAST ORANGE,'NEW JERSEY', ASSIGNOR, BY MESNE y ASSIGNMENTS, T THE COLU'IMBIAl GRAPHOPHONE MANUFACTURING COM- PANY, 0F BRIDGEPORT, CONNECTICUT A CORPORATION 0F DELAWARE.

HEATINGQR COOLING PLATE FOR'MOLDING PRESSES.

' Original No. 1,296,916, dated Iarch 11, 1919, Serial No. 215,821, led February 7, 1918.V Application for reissue Aled' -IDeeember 13, 1919. Serial No. 344,711.

To all whom it may Concern.:

Be it known that I, CHARLES F. BUR- nonons, a citizen of the United States, residing at 122 Prospect Street, East Orange,

county of Essex, and State of New Jersey,

have invented certain new and useful Improvements in Heating or CoolingPlates .for Molding Presses, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

The object of the present invention is to furnish a heating or cooling-plate which niay be employed in presses or upon Workbenches to heat a mold, or other object,

seated upon the said plate.

This heating or cooling-plate comprises a basehaving a flat top to which -is fitted a top-seat having numerous interior channels in which the heating or cooling fluid is circulated in a novel manner, so-as to secure a very free movement of the fluid through the channels in bot-h directions from the tluid' inlet to an outlet, which mode of circulation heats the seatfon top of the cooling-plate uniformly, as well as quickly.

Such top-portion of the cooling-plate is preferably made thin so as to lreadily transmit heat to or. from the mold or other article au amounts 'to many tons'in hydraulic molding l operations is, in this construction, sustained by forming the circulating channelsbyi-fribs upon the under side of' such top-portion,

which ribs restdirectlyupon the base ,so'as' Vsupported thereon; and the pressure towhich' such a plate is sometimes subjected, which` i so-that the tvvo lialves maybe equally affected;y andfurthermore, the'restriction of the circulation through those passages which may be .shorter than others, :sov as to permit longer passages to be heated to the same degree as the shorter ones.

The invention ymay be practiced with any construction that carri-es out this mode of distribution. I.

YThe underside of the base is ribbed so as vto greatly reduce the area of contactwith 'of thebase, the outer ends of which are provided respectively with an inlet and outlet. The fluid entering the inlet-pocket has access at both sides to the channels, and the I heating or cooling fluid thus movesin both directions from the inlet through the channels to the outlet-pocket. i

To insure an equal distribution of the fluid from the inlet-pocket into vall the channels, from both slides of the pocket, a partition is Ipreferably provided to intersect the channels at the middle lin'eof the pocket and the partition extendeddownward into the pocket so that the fluid 'entering the in let-pocket is divided by the partition and 95 flows equally into the channels from both sides of the pocket.- A somewhat similar partition intersects' the channels over the outlet-pocket, thus forcing the fluid' entering both sides of the pocket to flow toward its outer end. which is provided with the outlet.

The invention Will be understood by reference to the annexed drawing, in which Figure l is a cross section of the entire heating andcooling-plate. taken on line 1 1 in 95 Fig. 5, with a record-moldA att-ached thereto; Fig. 2 showsr the upper side of the base; Fig. 3 is cross section of a portion ofthe bascand top-seat taken vacross one of the pockets on line 33 in Fig. 2; Fig. 4 is a 100 K side of the top-seat; Fig. 6 is a. section of the top-seat on line 6 6 in Fig. 5; Fig. 7 is a top view, and Fig. 8 a side view of the partition for the inlet-pocket. Y

Fig. 9 is. a top view, and Fig. 10 a side View of the partition for the outlet-pocket.

Fig. 11 is a cross-section of the entire heating and cooling plate, with the various parts in proper assembled relation, this cross-sectional view being taken along ax diamet-ral line between/the integral ribs b of base a (Fig. 2).; and

Fig. 12 is an' incomplete perspective View from above, and including several incomplete cut-out sections, of the plate structure, with all parts in proper assembled rrela-tion; this view showing clearly the position of inlet and outlet, the means of diverting the su plied media to the plurality of channe s, and other means of again diverting the media, pro ortionately to the length of the channels, t rough the outlet.

The base a, as shown in Figs. 3 and 4,

is formed of a thin disk with integral ribs L upon its under side to rest upon the bedplate or pla-ten.

Radial pockets c and cl are formed in the upper side of the base, the outer end of the inlet-pocket being connected with an inlet f and the outer end of the outletpocket connecte-d with an outlet f, The

l margin of the base is provided with an upwardly projecting ring g to (enter the to -seat thereon. The said seat is shown with the to -portion h of the body made relatively t is, and a series of concentric channels e formed upon its under side by concentric ribs e which are fitted to rest upon the base a.

Radial notches i are shown in the ribsk at opposite sides of the center (upon the line 1-1 in Fig. 5) and flat partitions are fitted to such notches to wholly cut off any connection between the channels at one side and the other of the dianietrcal line 1 1.

The partitions project downward respectively into the pockets c and d, the partition for the inlet-pocket o having a parallel body la fitted to the notches i, and a shorttapered end L projected toward the inlet Y, and the lower portion k2 wedgeshape as shown in Fig. 3, where it pro jects downward intothe pocket.

The pocket is made wider than the thickness of the wedge, to afford clearance at its o'pposite sides for the fluid to pass into the adjacent ends of the channels, as is indicated by the arrows in Fig. 3 at opposite sides of the partition. The wedge-shape of the partition 'facilitates the passage of the fiuid from the inlet to the whole length of the pocket.

The partition for the outlet-pocket ,d has a parallel portion l extended about one-halfI its length which is fitted to the ture- Y notches i next the centerof the plate, and the partit-ion is wholly tapered therefrom in a thin wedge Z to the outer end of the pocketbwhich coincides with the loutlet-aper- 4There this Apartition extends downward into the pocket d,.it is formed with a widened butt Z2 which fills the pocket adjacent to the inner or central channels e, and is tapered to the sides of the body-portion Z. It thus restricts. the flow from the inner channels which is only effected in the narrow wedge-shaped space n at the sides of such'butt.

The tendency of an elastic` fluid like steam, when admitted to these concentric channels, would be tovtake the shortestvpath through the channels next the center of the plate, so tl1atthe center of the plate would be heated much more quickly and effec tively than the outer portion.

The restrictions of the outlet from these central 'channels to the pocket d prevent a rapid flow of fluid through these inner channels and causes an equal distribution of the fluid to the outer channels, thus securing 'a uniform temperature of the whole plate.

It is obvious that if the notches 'fof the ribs e were disposed over the pockets c, d, the fluid when introduced to the inletpocket c would pass from both edges of the same into the channels at both sides of the pocket and would thus reach the outletpocket d, but without any control as to its velocity or its distribution in the inner and outer channels which is effected by the use of the partitions.

By makino` the top seat of a casting, integral partitions could be cast in the proper pos-ition upon the ribs to project into the Such projecting parts- Pockets c, dar would, however, interfere with the facingoff of the ribbed surface of the top-seat, which is necessary to give it an equable bearing upon the top of the base a, and the use of loosev partitions thus facilitates the proper finishing of the parts.

The formation of the top-seat separate -from the base is obviously necessary to introduce the partitions to the pockets, and the marginal ring g serves to center the top-I seat upon the base and also lto receive an 4annularclamp g which is provided upon the ring g to press the margin of the top` seat closely upon the base.

A flange h3 is formed upon the margin of the top-seat, andthe annular clamp is constructed to overlap the flange k, and is enabled to forni a steam-tight joint hetween the flange and the base by pressing upon a collar of yielding pack-ing j between the flange and the under surface of the clamp. The clamp is 'secured to the ring g by numerous screws gwwhich are .surface to be heated and cooled thereby.

adapted toresist the pressureof the steam employed in such plates when used for heating purposes; and these screws are arranged to compress thel packing j and spread the same to fonni a tight joint with the adjacent surfaces. The top-seat is -also preferably secured to the base by acenter'stud 'm. extended through a hole af in the base and secured beneath the saine by a nut ccm/l` n The inlet or outlet to either of the pockets may obviously be extended through the edge of the plate, as shown at f in Fig. l, or

`'to the bottom ofthe plate, as shown The disk-mold 21 is shown in Fig. `l clamped detachably upon the upper surface of the top-seat by gibs y and screws 1', which illustrates the securing of such moldparts to the plate to be `heated and cooled thereby in a press. I

Figs. 5 and 6 show bosses hf upon the inner side' ofthe top-portion h to receive the holes h2 for the screws 1' of thel gibs g, thus securing lightness in this part of the structure.

From the above construction it will be seen that inyinvention provides means, in avery simp e construction which is readily made of castings, by which steam entering an inlet at the edge of the plate is distributed. positively into opposite halves ofthe plate so as to heat t ein equally; and also prevents steam .from passing through shorter Ichannels more freely than through the longer channels. l

Theeffect ofv the whole construction is to secure rapidity of uniform heating over the entire surface of the plate, and facilitating also thealternate heating and 'cooling of t-he plate when required. p

In the manufacture of articles from plastic materials, especially in the manufacture of sound records, it is important that the matrices or dies be uniformly heated and cooled throughout their eifective surfaces otherwise defective spots will ap-pear upon the finished articles. From the foregoing description, therefore, it will be understood that my invention, broadly speaking, embraces a novel apparat is .and process of heating and cooling an in pression proo ducing surface secured to a4 suitable backing; the process consisting in passing .a

heating or a cooling medium through a plurality of paths arranged in close proximity `to said impression producing surface, and

va ing the flow of said medium through sai pathsiin proportionto the area of sa(i)d I' in other words it may be stated that the quantity ofluid passed through the passages in the backing is not only a function of the volume of said passagesfbut also a function of the area of the impression prosiiniiltaneously and ducing surface to be heated or cooled by thel fluid passing through said paths.`

Having thus set forth the nature of the invention, what is claimed herein is:

1. In a plate for heating or cooling, the combination, with a base having a radial pocket in its upper side disposed as set forth,

of a. top-seat united to the base and having an outlet from the opposite side-of the base, w

whereby fluid is distributed laterally in the said channels in both directions from the said pocket to reach the said outlet.

2. In a plate for heating or cooling. the combination, with a base having a flat top with opposite radial pockets therein, of a top-seat united to the base and provided next the base with a plurality of circulan channels, an inlet and outlet in the base connected respectively to the outer ends of the said pockets, the fiuid in the inletpocket being thus admitted from both sides of the. inlet-pocket into the. channels between vtheV ribs, to reach the outlet connected with the opposite outlet-pocket.

In av plate for heating or cooling, the combination, with a basehaving opposite radial pockets in its upper side, of a top-seat united to the base and provided next the base with a plurality of ycircular channels with opposite radial partitions intersecting` the said channels and projected downward into the pockets for the purpose set forth.

4. In a plate for heating or cooling, the' combination, Witha base having opposite radial pockets in its upper side, of a to -seat united to the base and having a plurality of concentric ribs forming channels curving about the center of said seat andintersected radially by opposite partitions extended downward intothe said pockets, an inlet su pplying a heating or cooling fluid to the outer en of one of the saidpockets, and an outletfrom the outer end of theopposite pocket.

5. In a plate for heating or cooling, the combination. with a base haring a fiat top with opposite radial pockets therein and an inlet and outlet in the base connected respectively to the outer ends, of the said ockets, of a top-seat united to thebase andv liaving a plurality of concentric ribs and channels supported upon the-top of the base. and partitions radially intersecting said ribs and extended. downward into the said pockets, with clearance in the pockets. at opposite sides of the partitions connecting with the channels between the said ribs.

6. In ay plate for heating or cooling, the

Aeo

.fluidsQthereto concurrently. 1

combination, with a base having a flat top with opposite radial pockets'therein and an inlet and outlet in the base connected respectively to the outer ends of' the said pockets, of a top-seat united to the base and havinga plurality of concentric ribs andl next the outletl having-a ylong taper to p'ro` portionA the' access of the escaping fluid to the outlet-pocket, and direct it to the outletopening.

7. In a plate for'heating or cooling, the combination, with a base having a flattop with a ring` at the margin `and opposite radial pockets in its upper surface with inlet and outlet, connected respectively to their outer ends, of a top-seat fitted within the said ring v and having a series of annular ribs upon its under side resting upon the said base, andradial partitionsintersecting the said .ribs and the channels between the same, and projecting" into the said pockets with clearance in the pockets at opposite sidesl of the partitions vconnecting With the channels lbetween the said ribs, and the topseat being secured to theA base, at its center andV margin to form' a tight-joint withl the said ofckets.

8, n a plate for heating or cooling, the

combination, with a basev having a flat top with opposite radial pockets therein and an inletand outlet in the base connected respectively tio the outer ends of the said pockets, of a; top-seatv united vto the base and havingI a plurality yof concentric ribsand channels supported upon the. top of the base, and par-A titions radially intersecting said ribs and"A ed for pressing hot' plastic material which extended downward into the* said pockets, the partition in the outlet pockethaving its butt widened at theinner endto obstruct the flow from the central channels, and its 'outer endfgreatlyjeduced by taper to inouterchannels. j n

9. The process of heating and cooling a creasel or facilitate the discharge from the flat die for handling'hot phonograph record material which consists in forming a plurality of circularly arranged: channels close `to each other and to the die surface for the` passageot fluid and supplying each of the .10.;The fprocess of heating and cooling diesI for the" manufacture vof phonograph records from hot plastic material, which con- Sists in supplying heating and` cooling fluids alternately and concurrently to a plurality j of uniformly-spaced circularly'jari'anged pasthe parts `being annularly channeled and sages near the surface of said die, and regu-l lating the amount of fluid admitted to each passage'inproportion to its length.

ILAy phonograph die 1to1' pressing hot plastic material comprising a die body and channel disk interfitting therewith kprovided witlia plurality 'of' annular channels in one of ,the parts on their facing sidel and inlet and outletlluid supply and discharge provision connecting with all of the channels.

12. In a phonograph die, a die body and channel disk interfitting therewith, ,one of .the parts being annularly channeled con' centrically and the other providing inlet and outlet passages both' connecting therewith at ldifferent distances from the center. A .13. In a phonograph die,a die body and channel disk intertting-therewith, one of the other providing channel outlets Aof variant size. v

14. A disk die for pressing hot plastic, material divided into two parts along 'a plane parallel to the face of the die having c ircularly spaced channels formed in the facing side of one ofsaid'parts, separate inlet. and outlet fluid vconnections for said` channels, :ind a fluid tight seal between the parts'.

l5.' Iii combination, a die body -meinberf av channeled disk member interfitting therewith. and a fluid vtight joint between 'the members and including a projecting rib .in one member fitting a groove in the, other, and an additional fluid-closurermember con-j fined in said groove. i

16. The process. of heating or cooling af matrixl adapted for' .the v,pressing of hot plastic material which. consists in passing heating and cooling fluids alternately and in multiple paths through'patlis in the back,- ing to which the matrix is secured, in quan; tities proportional to the length of,...sai'd paths. v

17. The process of heatingamatrix adaptconsists in passing a heating fluid through a plurality of paths of variant'- lengths ar,- ranged in close proximity to saidv matrix the YVquantity of fluid passed through `said l i paths being a function of their volume. 18. Tlieproce of cooling a matrix adapted for pressing hot plastic material which consists in passing a cooling fluid through a'plurality of paths of variant lengths arranged inl close proximity to said matrix thequantity of fluid passed through said paths being a function of their volume.

19. The process. of heating and cooling a matrix adapted for pressing hot plastic 1 material `which consists in alternately passing heating and cooling fluids through a plurality of paths of variant .lengths arranged in 'close lproximity to said matrix the quantity of said heating and cooling l fluids passed through said paths being a function of their volume.

20. The process of heating and cooling a sound rec-ord matrix secured to a suitable backing which consists in alternately passing a heatino` and cooling fluid through paths in said backing of variant lengths arranged in close proximity to saidvnmatrix, the quantity of the fluidpassed being proportional to the amount of surface to be heated by the fluid passing through said respective paths.

21. The process of heating and cooling an impression producing surface secured to a suitable backing, which consists in alternately passing a heat-ing and. cooling medium through a plurality of paths arranged in close proximity 'to said impression surface, and varying the flow of said medium through said paths in proportion to the area of said surface to be heated and cooled thereby.

22. -An apparatus for heating and cooling a matrix comprising a backing to which the matrix is secured provided with a plurality of fluid passages passing therethrough in combination with means for varying the flow of the fl'uid through said passages in proportion to the area of the matrix to be heated and cooled thereby.

23. The process of heating and cooling a die for hot plastic material `which consists in passing heating and cooling uids alternately and in multiple paths -through' the die close to the surface along well defined lines of flow of relatively small cross section at. substantially4 uniform distances apart.

24. The process of facilitating heating and cooling of a hot plastic material into disks which consists in supplying the heating and cooling fluids each concurrently through separate paths distributed at substantially uniform distance close to the surface of the material.

25.111 combination, a die body, a disk interfit-ting therewith and provided with channels of different lengths adapted to the flow of a medium. and means for regulating the flow in the channels in proportion to their lengths.

26. In combination, a structure having a surface to be heated, means including a plurality of passages within the structure for flowing a heating medium close to the surface. and means for regulating the flow' to the different parts of the surface to uniformly bring said surface to the same degree of heat.

2T. In combination. a structure having a surface to be cooled, means including a plurality of passages Within the structure for flowing a cooling medium close to the surface, and means for regulating the flow to the different parts of the surface to uniformly bring said surface to the same degree of cold.

28. In combination, a structure having a surface to be heated and cooled, a plurality of paths in the structure. means within the structure for flowing both a heating and a. cooling mediumalternately and-close to the surface through the same plurality of paths,

and means for regulating the flow to establish an approximately uniform temperature` over the surface.

In witness whereof I affix my signature.

CHARLES F. BURROUGHS. 

